#include <bits/stdc++.h>

#define x first
#define y second
#define endl '\n'

using namespace std;

typedef long long LL;
typedef unsigned long long ULL;
typedef pair<int, int> PII;
typedef pair<double, double> PDD;

const double eps = 1e-8;
const double PI = acos(-1.0);
//const int N = , M = ;
const int INF = 0x3f3f3f3f;
const LL LINF = 1e18;
const double DINF = 1e20;
const int mod = 1e9 + 7;
int dx[4] = {-1, 0, 1, 0}, dy[4] = {0, 1, 0, -1};

int T, n, m, k, ans;

//int h[N], e[M], w[M], ne[M], idx;
//void add(int a, int b, int c){e[idx] = b, w[idx] = c, ne[idx] = h[a], h[a] = idx ++ ;}

int qmi(LL a, LL b, int p){int res = 1 % p;a %= p;while (b > 0){if(b & 1) res = (LL)res * a % p;a = (LL)a * a % p;b >>= 1;}return res;}
LL doMod(LL x, LL mod){return (x % mod + mod) % mod;}
int lowbit(int x){return x & -x;}
LL gcd(LL a, LL b) {return b?gcd(b,a%b):a;}

signed main()
{
    ios::sync_with_stdio(false), cin.tie(0), cout.tie(0);
    cout << fixed <<  setprecision(0);

    return 0;
}